A lymphocyte-inhibiting factor (chalone?) extracted from thymus :  immunosuppressive effects. 

 - [Washington, D.C.,  19--?] 
 - 1 v. 
<br/><br/> [Reprint from NCI monograph 38].  CRDP Program Historic Shelflist record. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cancer--Research.
<br/><br/><label>Gov. Doc. Class. No.: </label>HE 20.3162/A:L 989/5